Study on Mixture and Engineering Properties of Cold-melt Plastic Permeable Concrete

[[abstract]]本研究以回收之聚苯乙烯(PS)粒料配以苯系溶劑，製得塑膠透水混凝土之膠結劑，配以不同粒群粒徑級配之天然骨材作為透水混凝土之填充材，組構成為冷溶塑膠透水混凝土，藉由實驗計劃法L9(34)直交表配置試驗，以C/P比、膠固比與骨材最大粒徑為材料因子。 試驗量測以透水試驗儀、液壓孔隙測儀與全自動材料試驗機，分別量測所製備之塑膠透水混凝土之孔隙率、透水係數、抗壓強度與劈裂強度，並以全距分析與變異數分析探討各材料因子之參數水準，對塑膠透水混凝土之最適配比與影響程度。 經直交表統計分析結果顯示，按各材料因子對各項工程特性影響程度排序與參數水準之最適配比為：孔隙率：最大骨材粒徑3/8”、膠固比20％、C/P比1 30；透水係數：最大骨材粒徑3/4”、 膠固比20％、C/P比1 45；抗壓強度：膠固比30％、最大骨材粒徑3/4”＋3/8”、 C/P比1 30；劈裂強度：膠固比30％、C/P比1 80、最大骨材粒徑3/8”。 本研究所製備之冷溶塑膠透水混凝土之孔隙率為38~44％；透水係數為50~59mm/sec；抗壓強度為24~56kgf/㎝2；劈裂強度則為17~27 kgf/㎝2，皆符合透水混凝土的工程性能要求，顯示以塑膠黏劑取代水泥漿製備之新型塑膠透水混凝土，不但符合減廢與再生利用之生態化設計目標，更足以應用於不同工程用途之透水舖面。[[abstract]]The aim of this study is to make cold-melt plastic permeable concrete by using adhesive made of recycled polystyrene and benzene solvent and filling in nature reforcement made of different diameter aggregate gradation In this study orthogonal experimental method L9(34) is adopted and material factors are chemistry solvent/polystyrene ratio adhesive/solid ratio and maximum diameter of aggregate It is intended to respectively test the porosity water permeability compressive strength and splitting tensile strength of plastic permeable concrete by means of permeable testing apparatus liquid head infusion apparatus and computer controlled universal tester In order to explore the relationship between parameter levels of each material factor and the most proper mixture of plastic permeable concrete the result of the tests are processed by both range analysis and analysis of variance According to the important impact of each material factor on different engineering the result of orthogonal array statistical analysis suggests that the proportion of the most proper mixture is listed below in a sequent order Porosity：maximum diameter of aggregate 3/8”；adhesive/solid ratio 20% and chemistry solvent/solid ratio 1 30 Permeable coefficient：maximum diameter of aggregate 3/4”；adhesive/solid ratio 20% and chemistry solvent/solid ratio 1 45 Compressive strength：adhesive/solid ratio 30%；maximum diameter of aggregate 3/4”+3/8” and chemistry solvent/solid ratio 1 30 Splitting tensile strength：adhesive/solid ratio 30%；chemistry solvent/solid ratio 1 80 and maximum diameter of aggregate 3/8” In this study the porosity of cold-melt plastic permeable concrete is 38~44% the water permeability is 50~59 mm/sec; the compressive strength is 24~56kgf/cm2 and the splitting tensile strength is 12~27kgf/cm2 that all confirm the requirement of permeable concrete engineering To sum up it reveals one thing that the new model of plastic permeable concrete made of adhesive not only fulfills the goals designed for ecologically decreasing litter and recycling but also can be applied appropriately for permeable concrete pavements of various utilizatio